Sudden decrease in semen volume

Hi, Iím 18 years old. I am healthy, workout 6 days a week, am on a balanced diet and get enough sleep.

I last masturbated around 12-13 February. Then I got a little busy and couldnít do ďthatĒ, so itís been about 1.5 week. It happens a lot, and I am able to hold back until the next session. Suddenly, yesterday morning after I urinated I felt a little slippery and sticky on the tip (as if it was semen). There was no visual sign, just the feeling when I rubbed to check. I thought it might have been the leftovers of a nocturnal emission and went on. But today (25 February) I was urinating and as I was about to finish and applied a bit force to empty my bladder, thatís when I saw a squirt of semen being ejaculated as if it was just a part of the urine. There was no sensation, I was not even sexually aroused.

I got concerned and tried masturbating. When I ejaculated, it was unbelievably low in volume, just 2-3 drops as if I was pushing the penis after a successful ejaculation to bring out the leftovers. It was very thin, white liquid and there was no force to squirt it in the air. I was just slowly coming out. I gave myself time and tried again after 20 minutes, same result. Then I waited for 8 hours and tried again, same thing happened. Then I started writing this.

I have never faced such situation in my life since the day I hit puberty. I could masturbate 5-6 times in 2 hours and still could ejaculate a decent amount of semen on my last session (did it just to test out my limit, I donít do it more than twice a day if I do at all). If I did not ejaculate in a week or two, the next ejaculation would have been a mess, squirting in large bursts and what not. I was satisfied with myself, then this happened. As far as I can remember, I was not hit in any place let alone those places since my last successful ejaculation. I can also get an erection as easily as I could before.

Any ideas why this may happen? Is it anything permanent? What went wrong?